phi - shin - fire

notice the similarity between the phi calipers and the hebrew letter shin:

We know this proportion to belong to Venus/Aphrodite/Ishtar/Eshnunna...
See again the root of fire/Esh, and man/Ish...

wikipedia:
sho - The letter Ϸ (ϸ, sometimes called "sho" or "san") was a letter added to the Greek alphabet in order to write the Bactrian language. It was similar in appearance to the Anglo-Saxon and Icelandic letter thorn (þ), which is sometimes used to represent it in modern print, although both are historically quite unrelated. It probably represented a sound similar to English "sh" ([ʃ]).

Ishtar:

The golden mean and the pyramid (fire in the middle):

masonic:

Masonically, it is said to be Sirius or Horus rather than Venus/Ishtar.
It is curious that Ishtar means "star".
In hebrew, kokab means "star" and is also the name of the planet mercury.
Mercury's number is 8, and Ishtar's star is eight-pointed.http://en.wikipedia.org/wiki/File:Ku...shtar-star.jpg